Impact on the boundary of a compressible two-layer fluid

Korobkin, A. A. ORCID: and Khabakhpasheva, T. I. (2006) Impact on the boundary of a compressible two-layer fluid. Fluid Dynamics, 41 (2). pp. 263-277. ISSN 0015-4628

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Within the framework of the acoustic approximation a solution of the plane nonstationary problem of impact on a fluid boundary is found. The fluid occupies the lower half-plane and consists of two layers with given speeds of sound and densities. The upper layer has a constant depth and is bounded above by a plate with a given normal velocity. The solution is constructed using the Fourier and Laplace integral transforms. Numerical calculations are performed for piston impact across a rigid screen and the impact of a jet with an aerated head on a rigid wall. It is shown that the presence of an interlayer with reduced speed of sound and/or density considerably changes the evolution of the hydrodynamic pressure distribution over the impacting surface: the absolute pressure maximum decreases but pressures of significant amplitude are maintained for a longer time than for a homogeneous fluid.

Item Type: Article
Faculty \ School: Faculty of Science > School of Mathematics
UEA Research Groups: Faculty of Science > Research Groups > Centre for Interdisciplinary Mathematical Research (former - to 2017)
Faculty of Science > Research Groups > Fluid and Solid Mechanics
Depositing User: Vishal Gautam
Date Deposited: 18 Mar 2011 10:24
Last Modified: 13 Feb 2023 10:30
DOI: 10.1007/s10697-006-0040-0

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